Electromagnetic clutch.



H. AST. ELECTROMAGNETIC CLUTGH.

APPLICATION FILED JUNE 15, 1906.

Patented Nov. 17,1908.

4 SHEEFF S -SHEET 1.

' H. AST- ELEGTBOMAGNETIG CLUTCH.

APPLICATION 211.21) mm: 15; 1900.

Patented Nov. 17, 1908.

4 SHEETS-SHEET a.

, H. AST. ELECTROMAGNETIC GLUTOR.

APPL IOATIOII rILnD mm: 16. 1906.

Patented Nov. 17. 1908.

m M W Hi AST. ELECTROMAGNETIC CLUTCH.

APPLICATION FILED JUN}: 15, 1966. v V v I 'P8.t8!1t6l1 NOV. 17, 1908.

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aw g yz 7 9 UNITED STATES PATENT OFFICE.

HEINRICH AST, OF VIENNA, AUSTRIA-HUNGARY, ASSIGNOB TO THE FIRM OF VULKAN MASCHINENFABRIKS-AOTIEN GESELLSOHAFT, -OF VIENNA, AUSTRIA-HUNGARY.

ELECTROMAGNETIC CLUTCH.

I ject of the Emperor .of Austria-Hun ary,

. faces .tocom necessary to insure .perm'anentlysatlsfactory residing at Vienna, Austria-Hungary, ave

of the clutch which are drawn towards one another;

invented certain new and useful Improvements in Electromagnetic Clutches, ,of which the following is a specification.

In .electrQ-ni etic clutches which act by the ressure of riction surfaces against one anot er the perfect adjustment of .these surate for their wear, which is working, has hitherto not :been possible without appreciable interruptionuofthe vwork .and -without:t'aking theclutchto pieces. The ar- 1 rangementsheretofore employed for thispur- --pos'e-in which friction bodies are located in recesses formed in one of the clutch parts, separate adjustment of these friction bodies be1n effected by means of individually adv'usta 1e screws, .has .not proved satisfactory ecause uni-form adjustment of all the friction bodies in the. same vplane cannot be accomplished bylthese means and therefore, in spite of the time spent onthe,work,.one-sided adj ustment-and-consequent jamming, incompletecontact, rapid wear and considerable osslof efiiciency .are unavoidable.

' The object of "the present invention is to.

provide-an electro-magnetic clutch, in .which "the said disadvantage .is obviated. :For this pur ose the -friction bodies of one orof each oft e two parts of the clutch are arranged as a uniformly.. mov'able whole so that the friction surfaces may. be effectively adjusted. Thisuniform advance for adjustment ofthe friction .body or friction bodies of one or both partsoftheclutch can be eflected in a I variety of ways and several constructional forms of such clutches are shown in the drawings as examples.

The invention will be best understood .in

connection withthe accompanying-drawings,

" in 'whiclr F gures -1, 1', and ,2 illustrate-in section a I portion of an electro-magnetic clutch and show one means of advancing the -friction -member or members. Figs. 3,4,5, 5, 6, 7, 8 and 9 are similar-views showing an adjustable carrier for advancingthe friction mem Specification of Letters Patent. .An etionfil e iw .14 .0 pm 1;,- 8 6?- vane .mentsran be vpushed in from .the between the annular fla Patented Nov. 17, 1908.

her or members. Figs. 10 to 15 are similar views illustrating vmodified .means of ad'- th f iction meInber or-memhers. In. .cases .a and 1) denote thegtwo parts a and d denote their friction bodies. 1

As shown in Fig and d, which .cons1st of rings ".ofnon-mag- .netic material, are arranged upon the annuthe form ofia complete ring or of ring segments. In the firstcase it is only necessar to slightly .draw back the externally ble attachment-screws .of the friction rings for the r ng, .wh

case the ring sege in the-secon eriphery e of t e corresponding clutch partand t ecorresponding friction body. In the first case, holes are formed in .the backing rings for assage of the attachment screws, and .in tie second case slots .are formed in the ,ring segments I for such screws.

I As shown in :Fig. -2-the friction bodies ofv 1- the friction bodies 0 purpose of applying the backingi Jar flange-like mar inal. portions. of the. two

accessinon-magnetic material are placed between the attraction surfaces of the clutch arts a and b, and the backi-ngs e, which'se ect the. advance of the friction bodies, are-constructed as rings or .ring segments, as .herein'before described.

thebacking to be placed in provided on its outer and inner peripheral surface with screw threads of .equahpitoh Hand'- suitably difieren t inclination whereby thelbody d is screwed'into thev art 6 of the clutch. -Theadjustment of-the; -i ction-body d with respect to-Ithe otherwfriction body 0 In ,this construction the clutch parts need be only slightly pushed of the part a of'themlutch (which body may purpose, as shown in Fig. 4, a pin .9 acting I I of the part d.

In the example shown in Figs. 5, 6 and 7 the annular non-magnetic friction body (1 is fixed in a carrier f inthe formof a ring which surrounds the magnet body b and is movable endwise thereon. The uniform ad- 3 Vance of the friction body d can then be effected by turning the carrier 1 (Fig. 5) which is formed with an internal or external .screw thread and is adapted to be screwed to the part b' of the clutch or the part p of the machine connected therewith; or by movingit upon the smooth magnet body I) by vmeans of adjusting screws 9 (Fig. 6) the heads of which are provided with indicat ing marksfor the purpose of uniform movement. When the carrier f is adapted to be screwed to the magnet body and screws g are provided, as in Fig. 7, then the screws serge to' take up the pressure.

1 in w iich the friction bodies a and d are located between the attractive surfaces, as in Fig. 3, the friction body d being rigidly connected to one part of the clutch and the friction body a being mounted on a carrier 7 which is adapted to be either screwed into the magnet body a (Fig. 8) or to slide therein (Fi 9) the movement in the latter case being e ected with the aid of screws h.

Figs. 10 and 11 show clutches in which the uniform advance of the one friction bodywith respect to the other is effected by a number of screws 7:, which are in connection with one another by a toothed ring 11 and pinions In (Fig. 10); orby a, toothed ring 5 and toothed segments 7' (Fig. 11) or are connected by a chain and chain wheels or similar transmitting means. The threaded holes forthe screws 12. are in the magnet body I) and the screws act upon a carrier f mounted in the friction body 11.

Fig. 12 is a vertical section and Fi 13 ani of the external view of a piece of the art clutch, showing a constructiona form based upon the action of wedge surfaces. The

wedge surfaces are arran d, to extend in the same direction, on the ace of the part b of the clutch and on the juxtaposed face of the carrier f, and, on the rotation of the carrier, by means of a toothed ring 01 and toothed pinions k, the carrier and clutch part 8 and 9 show constructional forms 50' slide along one another that the carrier together with the friction body (1 held there-' in are pushed forward towards the other fixed friction body 0. T i

In the construction shown in Figs. 14 and 15 eccentrics m are provided for effecting the advance. These eccentrics are mounted to rotate in the part b of the clutch and can be rotated, for example b a toothed ring 13 and toothed segments 7'. P aced round the eccentrics are pressure iecesor blocks Z which are caused to slide orward in guide grooves in the part b of the clutch, against the friction body d, or a carrier connected therewith,

when the eccentrics are suitably rotated. In

all cases, where the adjustment is described a for only one friction body, the other friction body may also be arranged to move so as to render a better wear of the material possible. The friction surfaces ma be flat or suitably curved or be wedge s aped. Instead of being applied to the parts of the clutch they may be applied to the driving device p of the clutch, e. g. to a wheel, a belt pulley or the like, as in Figs. 1 and 5 and be arranged to advance for the pur ose of adjustment in any of the ways descri d. What I claim as new is:

1. In electro-magnetic clutches: two clutch for one or both of said friction members; said means to uniformly advance one or both of said carriers independently of and relatively to said clutch members to compensate for wear of said friction members and to control the air gap between the clutch members.

3'. In electro-magnetic clutches: two clutch members having a predetermined maximum air gap and adapted to be drawn toward each other; a friction member or members therein adapted to act together; and an adjustable carrier for said frlction member or members adapted to uniformly advance said friction members or members independently of and relatively to said clutch members to compensate for wear of said friction members and to control the air gap between the clutch members. I t

4. In electro-magnetic clutches: two clutch members having a predetermined maximum and relatively to said clutch members to com- Witnesses:

air gap and adapted to be drawn toward each the clutch members and m other; a friction member or members therein carrier or carriers :igainst d di n sald 10 adapted to act together; a carrier or carriers In testimony whereof I have hereunto set for one or both of said friction members m h adapted to, be turned so as to adjust said fric ne se m Plesenoe two subscnbmg w? tion member or members independently of HEINRICH AST.

pensate for wear of said friction member or J o R members, and to control the air gap betwee i dnn.

It is hereby certified that in Letters Patent No. 903,945, granted November 17, 1908, upon the application of Heinrich Ast, of Vienne, Austria-Hungary, for an improve- 'ment in Electromagnetic Clutches, an error appears -in the printed specification requiring correction, as follows: In line 107, page 2, the word said, second occurrence, should read and {and that the said Letters Patent should be read with this correetidn therein that the same may conform to the record of the case in the Patent Oflice.

' Signed and sealed this 12th day of January, A. D., 1909.

mm o. o. BILLI NGS,

I Acting Commissioner of Patents.

Correction in Letters Patent No. 903,945.

, and relatively to said clutch members to com- Witnesses:

air gap and adapted to be drawn toward each the clutch members and m other; a friction member or members therein carrier or carriers :igainst d di n sald 10 adapted to act together; a carrier or carriers In testimony whereof I have hereunto set for one or both of said friction members m h adapted to, be turned so as to adjust said fric ne se m Plesenoe two subscnbmg w? tion member or members independently of HEINRICH AST.

pensate for wear of said friction member or J o R members, and to control the air gap betwee i dnn.

It is hereby certified that in Letters Patent No. 903,945, granted November 17, 1908, upon the application of Heinrich Ast, of Vienne, Austria-Hungary, for an improve- 'ment in Electromagnetic Clutches, an error appears -in the printed specification requiring correction, as follows: In line 107, page 2, the word said, second occurrence, should read and {and that the said Letters Patent should be read with this correetidn therein that the same may conform to the record of the case in the Patent Oflice.

' Signed and sealed this 12th day of January, A. D., 1909.

mm o. o. BILLI NGS,

I Acting Commissioner of Patents.

Correction in Letters Patent No. 903,945.

It is hereby certified that in Letters Patent N 0. 903,945, granted November 17. 1908,

upon the application of Heinrich A312, of Vienna, Austria-Hungary, for an improvement in Electromagnetic Clutches, an error appears in the printed specification requiring correction, as follows: In line 107, page 2, the word said, second occurrence, should read and; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Ofiice.

Signed and sealed this 12th day of January, A. D., 1909.

[SEAL] C. U. BILLINGS,

Acting Commiaswner of Patents. 

